CVE-2026-8202: MongoDB

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Using a densely populated chars mask and a large input string in the MongoDB aggregation operators $trim, $ltrim, and $rtrim, an authenticated user with aggregation permissions can pin CPU utilization at 100% for an extended period of time. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

Affected products

• MongoDB MongoDB: from 7.0.0, before 7.0.34 (fixed in 7.0.34); from 8.0.0, before 8.0.23 (fixed in 8.0.23); from 8.2.0, before 8.2.9 (fixed in 8.2.9); from 8.3.0, before 8.3.2 (fixed in 8.3.2)

Published 2026-05-13. Last modified 2026-06-17.